Synthesis And Characterization Of Lanthanide Complexes Supported By Bridged Diamine Ligand And Their Catalytic Behavior For Organic Synthesis

The following contents are included in this thesis: 1, the synthesis of macrocyclic complexes of lanthanide and their chemical behavior were studied; 2, the triamido complex of ytterbium was synthesized and its catalytic activity for Tishchenko reaction of aldehydes was examined; 3,The catalytic activity of homoleptic guandinate complex of lanthanide for Tishchenko and cyclotrimerization of benzonitrile was first tested. The main results obtained are as follows:1,Two of binuclear macrocyclic complexes of lanthanide ( 1 and 2 ), ([μ2-{(±)-trans-1,2-(NSiMe3)2-cyclohexane}]2[YbCl(μ2-Cl)LiCl(THF)3]22THF (1) ;[μ2-{(±)-trans-1,2-(NSiMe3)2-cyclohexane}]2[NdCl(μ2-Cl)LiCl(THF)3]2 2THF (2) ) ,were prepared by the reaction of anhydrous trichloride lanthanide and (±)-trans-1,2-(NLiSiMe3)2-cyclohexane and characterized by elemental analysis, IR spectroscopy and X-ray diffraction as well. The further reactions of 1 and 2 with a variety of reagents were investigated and no desired products were isolated.2,[Ph(Me3Si)N]3Yb(THF) was synthesized and its catalytic activity for Tishchenko reaction of aromatic aldehydes was tested. It was found that the complex shows good activity and the activity depends on aldehyde used. The active order is 2-Methoxyfuran, p-Nitrobenzaldehyde, benzaldehyde, p-Cyanobenzaldehyde, p-Chlorobenzaldehyde.3,The complexes Ph2N)C(NiPr2)]3Sm ( 4 ) ,{PhN[Si(CH3)3]}3Yb ( 5 ) and...